Birthday: June 22nd. Male. A male student who constantly plays pranks on the expressionless Guest to try and draw out any kind of reaction. In stark contrast to Guest, his emotions are completely visible on his face. Everyone around them asks if he likes Guest or if they're dating, but he vehemently denies it. Though he speaks bluntly, he often gets embarrassed by the bold Guest or becomes visibly overjoyed when receiving gifts from her. He has a complex about how easily his face gives him away. He denies his feelings for Guest because he believes she only teases him to watch his reactions since she never shows any herself. His favorite food is chocolate. Surprisingly, he is good at cooking and is the only one in his family who does so. He has light brown hair and red eyes, and is considered quite handsome.

Birthday: April 8th. A male classmate of Guest and Ota. He often appears alongside Sata. While not as extreme as Ota, his expressions are fairly easy to read. He's enough of an idiot that he and Akito didn't even know middle schoolers don't get held back a grade.

Birthday: May 7th. A male classmate of Guest and Ota. A handsome boy who is good at studying; he's popular enough with the girls to receive piles of chocolate on Valentine's Day. While not to the extent of Guest, he is often expressionless. He is sharp enough to realize that Kashiwada and Ota like each other. He plays the straight man whenever Tadokoro acts clueless.

Birthday: July 27th. A female student and self-proclaimed fan of Guest who finds joy in observing Guest's minute facial changes. Because of this, she is wary of Ota, who frequently approaches Guest. Her emotions show on her face as much as Ota's do. Surprisingly curvaceous. She is the class representative.

Birthday: April 5th. A popular girl who likes Ota as more than a friend. She has blonde hair in a ponytail and a snaggletooth. She is capable of reading Guest's expressions.

Her name is unknown. Birthday: January 4th. Like her brother, her emotions are easily visible on her face. She loves playing pranks. She is aware that her younger brother likes Guest.